Public forms & Email In — Choosing what lands where

The mapping list is the heart of the page: each row is one source and one field, and you can add as many as you like. The sources are the parts of an email — Subject, Message (quoted reply chains, "On … wrote:" trails and signature blocks stripped so the record holds just what was said) or Message with quoted history, the sender's email, name or domain, Sent to, Cc, the received date, any named email header (for senders that put order ids and references there), and attached files. Two do more than copy text. A fixed value writes the same thing on every message — "Source = Email", "Priority = Normal" — so a mailbox can feed a queue that already has conventions. And Match sender to a record links the email to the contact, company or customer it belongs to: pick a Relation field, say which field on the other table holds their address, and RowFold links the matching record — creating it if they're new, so every email quietly builds your contact list.